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Hydrodechlorination of chloroaromatic compounds over carbon-supported Ni-Mo catalysts

100%

Klijanienko A., Gryglewicz G., Stolarski M., Gryglewicz S.

Polish Journal of Environmental Studies

2008

tom 17

nr 6

887-893

The hydrodechlorination (HDCl) process of 2-chlorodiphenyl, 4-chlorodiphenyl, chlorobenzene, chloronaphthalene and chloroanthracene was studied over a sulphided carbon-supported Ni-Mo catalyst (15 wt% MoO3, 5 wt% NiO) in a stirred autoclave at 260°C and at a hydrogen pressure of 3 MPa. Activated carbons of different porosity characteristics were used as Ni-Mo catalyst support. A high chlorine removal for chloroorganic compounds was obtained in the presence of Ni-Mo/C catalysts, ranging from 73 to 99%. For monochlorodiphenyls, the HDCl degree is related to the position of the substituted chlorine atom. 4- chlorodiphenyl was converted to diphenyl to a higher extent compared with 2-chlorodiphenyl. Chloronaphthalene and chloroanthracene were shown to be more susceptible to chlorine removal than chlorobenzene. For comparison, chlorocyclohexane was tested in the HDCl reaction. The dechlorination of chlorocyclohexane proceeded at a much lower temperature compared to chlorobenzene.

Ograniczanie wyników

1 Polish Journal of Environmental Studies

1 Gryglewicz G.

1 Gryglewicz S.

1 Klijanienko A.

1 Stolarski M.

1 2008

Wyniki wyszukiwania

Hydrodechlorination of chloroaromatic compounds over carbon-supported Ni-Mo catalysts